Question

1) resolva as equaçães:

(a) x+5=20

(b) x+4=5

(c) 5z= -30

(d) 4y+16=4

(e) 4x-2=x+10

(f)4.(x+3)=2(12-X)​

Answer 1

Resposta:

a) x + 5 = 20

x = 20 - 5

x = 15

b) x + 4 = 5

x = 5 - 4

x = 1

c) 5z = - 30

z = -30/5

z = - 6

d) 4y + 16 = 4

4y = 4 - 16

4y = - 12

y = -12/4

y = - 3

e) 4x - 2 = x + 10

4x - x = 10 + 2

3x = 12

x = 12/3

x = 4

f) 4.(x + 3) = 2.(12 - x)

4x + 12 = 24 - 2x

4x + 2x = 24 - 12

6x = 12

x = 12/6

x = 2